CVE-2026-33195

CWE-22 — Path Traversal8 documents7 sources
Severity
8.0HIGH
EPSS
0.0%
top 90.50%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Rails ActivestorageRubyonrails Rails
Timeline
PublishedMar 24

Description

Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Storage's `DiskService#path_for` does not validate that the resolved filesystem path remains within the storage root directory. If a blob key containing path traversal sequences (e.g. `../`) is used, it could allow reading, writing, or deleting arbitrary files on the server. Blob keys are expected to be trusted strings, but some applications could be passing …

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Affected Packages3 packages

▶CVEListV5rails/activestorage< 7.2.3.1+2
▶RubyGemsactivestorage8.1.0.beta1 — 8.1.2.1+2
▶NVDrubyonrails/rails8.0.0 — 8.0.4.1+2

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

4
OSV
CVE-2026-33195: Active Storage allows users to attach cloud and local files in Rails applications↗2026-03-24
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GHSA
Rails Active Storage has possible Path Traversal in DiskService↗2026-03-23
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CVEList
Rails Active Storage has possible Path Traversal in DiskService↗2026-03-23
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OSV
Rails Active Storage has possible Path Traversal in DiskService↗2026-03-23
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📋Vendor Advisories

2
Red Hat
Rails: Active Storage: Active Storage (Rails): Arbitrary file access via path traversal in blob keys↗2026-03-23
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Debian
CVE-2026-33195: rails - Active Storage allows users to attach cloud and local files in Rails application...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-33195 Impact, Exploitability, and Mitigation Steps | Wiz↗
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